Measuring only 3.75 by 3 inches and weighing just 7.5 ounces, the SMSL M3 USB DAC / Headphone amplifier helps you achieve better sound without taking up too much space in your bag or on your desk. Equipped with the CS4398 DAC chip, it has a 24 bit/192 kHz sample rate via optical and coaxial, and a 24 bit/96 kHz sample rate via USB. Power the M3 with your computer, Android phone, or Android tablet using included Micro-USB to Micro-USB cable in the “IN 1” port, and plug into the second “IN DC” port when you’re looking for more power.